Compound engine



(No Model.) l 2 sheets-sheen 1.

E. ANDREWS.

GOMPOUND ENGINE.

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WITNESSES INVENTOR gwmwmi. wffy..

. y /fiwttb-rney" (No Model.) E. ANDREWS.

GoMPoUND ENGINE. No. 354,823. Pza.1;e11tedl Dec-il 21, 1886.

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N. PETERS, PbUIo-Lhognpher, Wuhnglon. D. C.

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aTnNT i EDVARD ANDREVS, OF vPOT'IVSVILLE, ASSIGNOB OF ONE-HALF TO ROBERT H. OOLEIWIAN, OF OORNWALL, PENNSYLVANIA. 'A

COMPOUND ENGINE.

SPECIFICATION forming part of Letters Patent No. 354,323, dated December 21, 1886.

Application filed SeptemberQB, 1886. Serial Nu'o. 214.776. (No model.)

To all whom it may concern:

Be it known that I, EDWARD ANDREWS, a citizen of the United States, residing at Pottsville, in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in Compound Engines;

and I do hereby declare the following to be aV full, clear, and exact description` of the invention, such as will enable others skilled inthe Io art to which it appertains to make and use the saine.

My invention relates to compound engines, and has for its object the construction of a siniple compact engine at ayer-y small cost; and

r 5 it consists, principally, in the construction of a valve for controlling the supply of a motoriluid and for reversing the engine.

The invention will be hereinafter described, and particularly pointed out in the clainis.

In the accompanying drawings,lwhich forni a part of this specification, Figure l represents a side elevation of my compound engine. Fig. 2 is a transverse vertical section of one or" the engines. Figs. 3 andc are views showing the ports or'channels in the valve for reversing the engine. Figs. 5 and 6 are views showing the ports or channels for conducting the motor-fluid to and from one engine to another.

Reference being had to the drawings and v3o the letters thereon, A B C represent the cylinders of my compound engine, and are graduated in the ratio as 5, 7, and l0 are to each other. The fluid by which the engines are propelled is admitted into A, and exhausted from it into B, and exhausted from it into'O,

from which it may be conducted to a condenser in the usual manner.

The cylinders are constructed in sections a b. rIhe lower one, b, of each cylinder is convex 4o on its end c, and has its bearing in a detachable seat, D, which is provided with a concave bearing-surface, d. A single rectangular port or passage, e, is formed in the end of each e cylinder, and the seats D are cach provided with two corresponding passages, f g, with which the ports e in the 'cylinders communicate alternately as the engines vibrate in their seats, and through which th'e motor-iiuid is ad- Initted and exhausted.f

Each lower section, Z, of the cylinders is provided with trunnions, to which an equalizing-yoke is attached and secured to the bedpl'ate ofthe engine. The construction of the cylindersand the eqnalizing-yoke is fully set forth and claimed in another application-of the same date of tiling, numbered 214,778, and need not, therel'ore, herein be further elucidated. Y

E represents the crank-shaft, to which the several pistons 7i i k are directly attached, and is supported in journal-boxes Z m on the standards n 0, which rest upon and are secured to the bed-plate.

F represents the bed-plate of the engines, to which the seats D are bolted, and is provided with a valve chamber or seat, p, for the reception of a valve, G, which is, by preference, made slightly conical, as shown. In the periphery of the valve are formed channels or passages l, 2, 3, and-4, which extend nearly throughout the length of the valve, and are employed for supplying fluid to and reversing the motion of the engine. The angular ends 5 of the channels l and register with the supply-pipe H, and the corresponding ends, 6, of the channels 2 and 3 register with the exhaust-pipe I. The channels 7 or 8 conduct the motor-fluid to the first or high-pressure cylinder, A, and the channels 9 or 10 exhaust it therefrom into the second cylinder, B, from which it is exhausted through the channel 1l or 12 into the cylinder O, froinwhich it is exhausted throughthe channel 13 or 14 into the pipe I, and conducted to a suitable condenser.

The operation of the engine is as follows: The direction in which ythe engine is to run having been determined, one of the vchannels 5 is brought into position to-register with the supply-pipe H, when the motor-fluid will be I supplied to all of the cylinders in the series at l its initial pressure. Should it be -desired to work the motor-fluid expansively or to compound the engines, the valve is turned onefourth (i) ot' arevolution, and one of the channels 7 or 8 brought into register with the supply-pipe, when the liuid will enter the first cylinder, A, and operate its piston, and beexhausted through the channel 9 or 10 into the second cylinder, B, and from it into the cylinder C. To reverse the engines, the valve is roo turned'one-half (l) of a revolution, whether the engines are all working under full boilerpressure or expansively.

By the construction described a very simple l and eliicient compound engine is produced, in which the cylinders in their vibrations control the supply of steam or other motor-fluid to and from them, and in which the supplyvalve serves to supply all of the engines in the series with a motor-duid at its initial pressure, reverses the engines, and converts them into compound engines at the willof the attendant.

Having thus fully described my invention, what I claim isl. The combination of two or more vibrating cylinders having passages in their seated ends, a bed-plate having a valve-chamber extending' throughout its length, and an adjustable valve adapted to said chamber and provided with passages communicating with each of the cylinders for conducting a motor-fluid to and from said cylinders and for reversing the motion of the engines, substantially as de scribed. y l

2. The combination of two or more vibrating cylinders having passagesin their seated ends, a bed-plate having a-valve-ehamber extending throughout its length, and a. valve provided with passages constructed to put the cylinders in communication with each other, and with thesupply and exhaust pipes,whereby a motorfluid is conducted into the first cylinder under its initial pressure and exhausted into another and used expansively, substantially as described. l

3. The combination of two or more vibrating cylinders, each having a passage in its seated end, a bed-plate having a valve-chamber extending throughout its length, and an adjustable valve provided with passages communicating witheach of the cylinders and passages for conducting a motor-fluid into and from one cylinder into another, substantially as described.

4:. The combination of two or more cylinders constructed to form a valve for admitting vand discharging a motor-fluid and a valve provided with passages communicating with each cylinder in the series, and adapted to conduct a motor-fluid to and from each cylinder and to reverse the engines, substantially as described;

In testimony whereof I aiix my signature in presence of two witnesses. t

EDWARD ANDREWS.

Witnesses:

S. A. TERRY, D. C. REINOHL. 

